The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 1996
Filed:
Sep. 22, 1993
Applicant:
Inventor:
Jiro Miyake, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395455 ; 395467 ; 395483 ; 395486 ;
Abstract
The present invention discloses a 2-way set-associative cache memory incorporating thereinto a write buffer. Tag entries corresponding to data entries within each bank are added valid bits and write reserve bits. The write reserve bit is set when a write request occurs and is reset when the requested write operation is completed. When a cache miss occurs, a replacement controller selects one of two data entries as a candidate for replacement (i.e., a data entry to which a corresponding write reserve bit is not set).